Just remember that dropping tire pressure only really works for tires that have a taller sidewall. Low profile tires,like most on 16" + rims are considered low profile. Dropping pressure on a low profile tire will actually hurt more than help..been there done that too lol. A 15" wheel would prob be best on these cars for drag racing. The stock 14" RS wheels work good too..although a bit on the narrow side. A stock 14" wheel with stock tires, drop the pressure, and it will actually hook pretty good with a good launch.